Henneguya ghaffari sp. n. (Myxozoa: Myxosporea), infecting the Nile perch Lates niloticus (Teleostei: Centropomidae)

Diseases of Aquatic Organisms

Mohamad A. Ali¹ 

关键词: Myxosporea;    Henneguya;    Fish parasites;    Nile;    Egypt;   

DOI  :  10.3354/dao038225

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Light microscopical description is presented for a new myxozoan species, Henneguya ghaffari, which infects the Nile perch Lates niloticus (Linnaeus, 1758) in Lake Wadi El-Raiyan in Egypt. The spore is characterized bya triangular thickening at the base of the caudal processes. The relatively long caudal processes run adherent to each other for two-thirds of their length, then bifurcate to very fine processes. Prevalence of infection was 34.6% and peaked during winterand early spring. The infection was concentrated along the intestinal tract, and in severe cases gills and gill rakers were also infected. Histology revealed that, in contrast to findings of previously published works on related species, intralamellarplasmodia did not develop inside the blood capillaries of the gills. Intestinal plasmodia were very pathogenic due to their large number and size. These plasmodia caused atrophy of the muscularis layer, and replaced and distended the submucosal andmucosal layers. The validity of some Henneguya species in Africa is discussed.

【 授权许可】

Unknown